Great art! Im aware that this is called Shades of purple but maybe adding a few more colours would make it pop more. Im not sure if it was your intent to make him look very dull and not pop but i do think its would be a bit better if you added a slight amount of yellow. Like maybe the like pieces of metal on the boot are a dulled down yellow or maybe he has an earring that is yellow. Just a recommendation. Anyway, keep up the good work!